High-pressure micro flow regulating valve

Abstract

The utility model discloses a high-pressure micro flow regulating valve, and relates to the technical field of valves. The check valve comprises a main valve body and an auxiliary valve body, wherein the auxiliary valve body is fixedly mounted at the top of the main valve body through a plurality of fixing screws; a first cavity and a second cavity are formed in the main valve body, the first cavity is communicated with the second cavity, and the second cavity is located above the first cavity; connecting pipelines are arranged at the two ends of the main valve body correspondingly, and a liquid inlet pipeline and a liquid outlet pipeline are arranged in the main valve body. According to the high-pressure micro-flow regulating valve, the regulating precision is remarkably improved, accurate control over micro-flow can be achieved, meanwhile, the scouring influence of high-pressure fluid is effectively relieved through the unique structural design of the high-pressure micro-flow regulating valve, durability of the valve is guaranteed, the valve is compact in structure and easy and convenient to maintain, the use cost is reduced, and in addition, the high-pressure micro-flow regulating valve is suitable for popularization and application. The valve further has an emergency closing function, fluid can be rapidly cut off in emergency, and production safety is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of valves, in particular to a high-pressure micro-flow regulating valve. Background Art

[0002] In high-pressure fluid control systems, micro-flow control valves play a vital role. They can accurately adjust and control the flow of high-pressure fluids to meet different process requirements.

[0003] However, existing high-pressure micro-flow control valves often have problems such as insufficient adjustment accuracy, complex structure, and difficult maintenance. Especially in high-pressure environments, the impact and scouring of the fluid will aggravate the wear of the valve, resulting in reduced valve performance and even safety hazards such as leakage;

[0004] When the existing valve is worn or damaged during long-term use, it is inconvenient to close the valve in an emergency, and the effect of emergency sealing of the fluid flowing through the inside is not good enough, and there are certain installation risks. Utility Model Content

[0005] The purpose of the utility model is to provide a high-pressure micro-flow regulating valve. In the utility model, the high-pressure micro-flow regulating valve significantly improves the adjustment accuracy and can achieve precise control of micro-flows. At the same time, its unique structural design effectively reduces the scouring effect of high-pressure fluids and ensures the long-term durability of the valve. In addition, the valve also has an emergency closing function, which can quickly cut off the fluid in an emergency situation to ensure production safety and solve the existing technical problems.

[0006] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0007] High pressure small flow regulating valve, including:

[0008] A main valve body and a sub-valve body, wherein the sub-valve body is fixedly mounted on the top of the main valve body by a plurality of fixing screws; a first cavity and a second cavity are provided inside the main valve body, the first cavity and the second cavity are connected, and the second cavity is located above the first cavity; connecting pipes are provided at both ends of the main valve body, and a liquid inlet pipe and a liquid outlet pipe are provided inside the main valve body, the liquid inlet pipe is connected to the first cavity, the liquid outlet pipe is connected to the second cavity, and the other ends of the liquid inlet pipe and the liquid outlet pipe are connected to the corresponding connecting pipes;

[0009] It also includes a valve core, which is arranged in the second cavity and used to complete the blocking between the second cavity and the first cavity. One end of the valve core is provided with a conical protrusion, and the bottom inner wall of the second cavity is provided with a corresponding conical groove, which cooperates with each other to realize the gradual adjustment of the fluid flow rate;

[0010] It also includes an adjusting component, which is used to complete fine adjustment of the valve core.

[0011] Optionally, the adjusting component includes an adjusting groove and a limiting sliding hole opened inside the auxiliary valve body, the limiting sliding hole is located below the adjusting groove and is connected to the adjusting groove, a connecting rod is fixedly installed at one end of the valve core, a limiting convex strip is fixedly installed on the outer wall of the connecting rod, one end of the connecting rod passes through the limiting sliding hole and is slidably connected to the inner wall of the limiting sliding hole through the limiting convex strip, a first thread is provided at the end of the connecting rod away from the valve core, a second thread is provided on the inner wall of the adjusting groove, an adjusting tube is provided in the adjusting groove, the adjusting groove is threadedly connected to the outer wall of the adjusting tube through the second thread, and the connecting rod is threadedly connected to the inner wall of the adjusting tube through the first thread.

[0012] Optionally, a screw is threaded through the bottom inner wall of the first cavity, a sealing plug is fixedly installed at one end of the screw, the sealing plug is located in the first cavity, and can slow down the flow rate of the high-pressure fluid entering the first cavity, a sealing ring is fixedly installed on the top inner wall of the first cavity, the sealing ring corresponds to the through hole between the first cavity and the second cavity, the sealing plug cooperates with the sealing ring to complete the closing of the valve in an emergency situation, a sealing part is provided at the bottom of the main valve body, and the outer wall of the screw is rotatably sealed and connected to the sealing part to prevent the fluid from leaking from the gap of the screw.

[0013] Optionally, a common connecting cavity is provided between the main valve body and the auxiliary valve body, the bottom end of the connecting cavity is connected with the second cavity, the top end of the connecting cavity is connected with the limiting sliding hole, one end of the valve core is sealingly slidably arranged in the connecting cavity, the outer wall of the connecting rod is sleeved with a spring, one end of the spring is fixedly connected to the top inner wall of the connecting cavity, and the other end of the spring is fixedly connected to the top of the valve core, and the spring is used to realize the rebound of the valve core when the connecting rod is damaged, thereby completing the closure of the valve.

[0014] Optionally, the liquid inlet pipe and the liquid outlet pipe are both inclined, and the water inlet ends of both are higher than the water outlet ends, so as to mitigate the impact of the high-pressure fluid on the internal components of the valve body.

[0015] Optionally, the sealing plug is made of metal material to prevent deformation caused by long-term erosion by high-pressure fluid.

[0016] Optionally, the pitch of the second thread is greater than the pitch of the first thread, so as to achieve differential movement between the adjusting tube and the connecting rod.

[0017] The embodiments of the present invention have the following beneficial effects:

[0018] In the utility model, the valve core and the conical groove are matched to realize the gradual adjustment of the flow rate, which greatly improves the adjustment accuracy. At the same time, the design of the adjustment component enables the valve core to be finely adjusted, meeting the demand for high-precision flow control.

[0019] In the utility model, the liquid inlet and outlet pipes of the valve are both inclined, which effectively reduces the impact and scouring of the high-pressure fluid on the internal parts of the valve body. In addition, an emergency sealing plug is also arranged inside the valve body. The sealing plug is made of metal material and can effectively resist the long-term scouring of the high-pressure fluid, ensuring the sealing needs of the valve in emergency situations.

[0020] In the utility model, the valve has a compact structure, few parts, and is easy to install and maintain. At the same time, the design of the spring enables the valve to automatically rebound when the connecting rod is damaged, thereby completing the closure of the valve and improving the reliability of the valve.

[0021] In the utility model, the high-pressure micro-flow regulating valve significantly improves the adjustment accuracy and can realize accurate control of micro-flow. At the same time, its unique structural design effectively reduces the scouring effect of high-pressure fluid, ensuring the long-term durability of the valve. The valve has a compact structure and easy maintenance, which reduces the cost of use. In addition, the valve also has an emergency closing function, which can quickly cut off the fluid in an emergency to ensure production safety.

[0022] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 This is a cross-sectional structural diagram of an embodiment of the utility model;

[0025] Figure 2 This is a schematic diagram of the enlarged structure of part A of an embodiment of the utility model;

[0026] Figure 3 This is an enlarged structural diagram of part B of an embodiment of the utility model;

[0027] Figure 4 This is a schematic diagram of the auxiliary valve body and its regulating pipe structure in one embodiment of the utility model;

[0028] Figure 5It is a schematic diagram of the three-dimensional structure of an embodiment of the utility model.

[0029] In the figure: 1. main valve body; 2. auxiliary valve body; 3. liquid inlet pipe; 4. liquid outlet pipe; 5. first cavity; 6. second cavity; 7. valve core; 8. connecting cavity; 9. connecting rod; 10. spring; 11. sealing plug; 12. screw; 13. sealing collar; 14. adjusting groove; 15. limiting sliding hole; 16. limiting convex strip; 17. adjusting tube. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] In the description of the present invention, it should be understood that the terms "opening", "upper", "middle", "length", "inside" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0032] In order to keep the following description of the embodiments of the present invention clear and concise, the present invention omits detailed descriptions of known functions and known components.

[0033] Example 1

[0034] See also Figure 1-5 As shown, in this embodiment, a high-pressure small flow regulating valve is provided, comprising: a main valve body 1, a sub-valve body 2, a valve core 7, and a regulating assembly;

[0035] The auxiliary valve body 2 is fixedly installed on the top of the main valve body 1 by multiple fixing screws. The main valve body 1 has a first cavity 5 and a second cavity 6 inside. The first cavity 5 and the second cavity 6 are connected. The second cavity 6 is located above the first cavity 5. Connecting pipes are provided at both ends of the main valve body 1. The main valve body 1 has a liquid inlet pipe 3 and a liquid outlet pipe 4 inside. The liquid inlet pipe 3 is connected to the first cavity 5, and the liquid outlet pipe 4 is connected to the second cavity 6. The other ends of the liquid inlet pipe 3 and the liquid outlet pipe 4 are connected to the corresponding connecting pipes.

[0036] In this embodiment, the liquid inlet pipe 3 and the liquid outlet pipe 4 are both inclined, and the water inlet ends of both are higher than the water outlet ends, so as to mitigate the impact of high-pressure fluid on the internal components of the valve body.

[0037] The valve core 7 is arranged in the second cavity 6, and the valve core 7 is used to complete the sealing between the second cavity 6 and the first cavity 5. A conical protrusion is arranged at one end of the valve core 7, and a corresponding conical groove is arranged on the bottom inner wall of the second cavity 6. The two cooperate to realize the gradual adjustment of the fluid flow.

[0038] The regulating assembly includes a regulating groove 14 and a limiting sliding hole 15 which are provided inside the auxiliary valve body 2. The limiting sliding hole 15 is located below the regulating groove 14 and is connected to the regulating groove 14. A connecting rod 9 is fixedly installed at one end of the valve core 7. A limiting convex strip 16 is fixedly installed on the outer wall of the connecting rod 9. One end of the connecting rod 9 passes through the limiting sliding hole 15 and is slidably connected with the inner wall of the limiting sliding hole 15 through the limiting convex strip 16. A first thread is provided at one end of the connecting rod 9 away from the valve core 7. A second thread is provided on the inner wall of the regulating groove 14. An regulating pipe 17 is provided in the regulating groove 14. The regulating groove 14 is threadedly connected to the outer wall of the regulating pipe 17 through the second thread. The connecting rod 9 is threadedly connected to the inner wall of the regulating pipe 17 through the first thread. The regulating assembly is used to complete fine adjustment of the valve core 7. When it is necessary to adjust the flow rate of the valve, the regulating pipe 17 is rotated. Since the pitch of the second thread is greater than the pitch of the first thread, the differential movement between the regulating pipe 17 and the connecting rod 9 can be achieved, thereby achieving fine adjustment of the valve core 7 and completing the adjustment of the fluid flow rate.

[0039] The present application can be used in the field of valve technology, and can also be used in other fields applicable to the present application.

[0040] Example 2

[0041] refer to Figure 1 , 2 3. Improvement on the basis of Example 1: a high-pressure micro-flow regulating valve, which is applied to the field of valve technology;

[0042] In this embodiment, a screw 12 is threaded through the bottom inner wall of the first cavity 5, and a sealing plug 11 is fixedly installed at one end of the screw 12. The sealing plug 11 is located in the first cavity 5 and can slow down the flow rate of the high-pressure fluid entering the first cavity 5. A sealing ring 13 is fixedly installed on the top inner wall of the first cavity 5. The sealing ring 13 corresponds to the through hole between the first cavity 5 and the second cavity 6. The sealing plug 11 cooperates with the sealing ring 13 to complete the closing of the valve in an emergency situation; a sealing part is provided at the bottom of the main valve body 1, and the outer wall of the screw 12 is rotatably sealed and connected with the sealing part to prevent the fluid from leaking from the gap of the screw 12; in an emergency situation, the screw 12 is rotated to make the sealing plug 11 move upward and cooperate closely with the sealing ring 13, thereby completing the rapid closing of the valve and realizing the emergency cutoff of the valve.

[0043] In this embodiment, a common connecting cavity 8 is opened between the main valve body 1 and the auxiliary valve body 2, the bottom end of the connecting cavity 8 is connected with the second cavity 6, the top end of the connecting cavity 8 is connected with the limiting sliding hole 15, one end of the valve core 7 is sealingly slidably arranged in the connecting cavity 8, the outer wall of the connecting rod 9 is sleeved with a spring 10, one end of the spring 10 is fixedly connected to the top inner wall of the connecting cavity 8, and the other end of the spring 10 is fixedly connected to the top of the valve core 7; when the connecting rod 9 is damaged, the spring 10 can push the valve core 7 to move downward, so that the valve core 7 is tightly matched with the bottom inner wall of the second cavity 6, thereby realizing the closure of the valve and preventing the fluid from continuing to flow.

[0044] In this embodiment, the sealing plug 11 is made of metal material to prevent it from being deformed due to long-term erosion by high-pressure fluid; by adopting the sealing plug 11 made of metal material, its resistance to erosion by high-pressure fluid can be improved, and deformation during long-term use can be avoided, thereby ensuring the sealing and stability of the valve.

[0045] The use process and working principle of the technical solution of this utility model are as follows:

[0046] When in use, the high-pressure fluid will enter the liquid inlet pipe 3 through the connecting pipe, and then enter the first cavity 5 and the second cavity 6 in sequence, and finally enter the connecting pipe on the other side again through the liquid outlet pipe 4, completing the passage of the high-pressure fluid; when the user needs to adjust the valve, the user can rotate the adjusting tube 17 by turning the rotating disk, and when the adjusting tube 17 rotates, it can be lifted up and down through the second thread on the inner wall of the adjusting groove 14, and at the same time, it is threadedly connected with the connecting rod 9 through the first thread on the inner wall, and because the pitch of the second thread on the outer wall of the adjusting tube 17 is greater than the pitch of the first thread on the inner wall, the adjusting tube 17 will push the connecting rod 9 to move slowly when moving, thereby realizing the valve core The slow movement of 7 can adjust the flow of the high-pressure fluid passing through the valve, and can realize the precise adjustment of the valve to the small flow of the high-pressure fluid, and the use effect is good; when the connecting rod 9 in the valve is broken, the valve core 7 loses the external driving power and restriction, and the spring 10 inside the connecting cavity 8 can push the valve core 7 to continuously abut against one end of the second cavity 6, which can ensure that the valve is closed in an emergency; according to the corresponding needs of the user, the screw 12 can be rotated when necessary to complete the movement of the sealing plug 11. When the sealing plug 11 is stuck in the sealing ring 13, the simple sealing of the valve can be directly completed, and the valve can be quickly closed when needed.

[0047] It should be noted that, in the description of this specification, descriptions such as "first", "second", etc. are merely used to distinguish between various features and have no actual order or directional meaning, and this application is not limited to this.

[0048] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0049] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. High-pressure small flow regulating valve, characterized in that: include: A main valve body (1) and an auxiliary valve body (2), wherein the auxiliary valve body (2) is fixedly mounted on the top of the main valve body (1) by means of a plurality of fixing screws; a first cavity (5) and a second cavity (6) are provided inside the main valve body (1), wherein the first cavity (5) and the second cavity (6) are connected, and the second cavity (6) is located above the first cavity (5); connecting pipes are provided at both ends of the main valve body (1), and a liquid inlet pipe (3) and a liquid outlet pipe (4) are provided inside the main valve body (1), wherein the liquid inlet pipe (3) is connected to the first cavity (5), and the liquid outlet pipe (4) is connected to the second cavity (6), and the other ends of the liquid inlet pipe (3) and the liquid outlet pipe (4) are connected to corresponding connecting pipes; The valve core (7) is arranged in the second cavity (6), and the valve core (7) is used to complete the blocking between the second cavity (6) and the first cavity (5). One end of the valve core (7) is provided with a conical protrusion, and the bottom inner wall of the second cavity (6) is provided with a corresponding conical groove, and the two cooperate to achieve the gradual adjustment of the fluid flow rate; It also comprises an adjusting component, which is used to complete fine adjustment of the valve core (7).

2. The high-pressure micro-flow regulating valve according to claim 1, characterized in that: The regulating assembly comprises a regulating groove (14) and a limiting sliding hole (15) which are arranged inside the auxiliary valve body (2); the limiting sliding hole (15) is located below the regulating groove (14) and is connected to the regulating groove (14); a connecting rod (9) is fixedly mounted on one end of the valve core (7); a limiting convex strip (16) is fixedly mounted on the outer wall of the connecting rod (9); one end of the connecting rod (9) passes through the limiting sliding hole (15) and is slidably connected to the inner wall of the limiting sliding hole (15) through the limiting convex strip (16); a first thread is arranged on the end of the connecting rod (9) away from the valve core (7); a second thread is arranged on the inner wall of the regulating groove (14); an regulating tube (17) is arranged in the regulating groove (14); the regulating groove (14) is threadedly connected to the outer wall of the regulating tube (17) through the second thread; and the connecting rod (9) is threadedly connected to the inner wall of the regulating tube (17) through the first thread.

3. The high-pressure micro-flow regulating valve according to claim 1, characterized in that: A screw (12) is threadedly penetrated through the inner wall of the bottom of the first cavity (5), and a sealing plug (11) is fixedly installed at one end of the screw (12). The sealing plug (11) is located in the first cavity (5) and can slow down the flow rate of the high-pressure fluid entering the first cavity (5). A sealing ring (13) is fixedly installed on the inner wall of the top of the first cavity (5). The sealing ring (13) corresponds to the through hole between the first cavity (5) and the second cavity (6). The sealing plug (11) cooperates with the sealing ring (13) to complete the closing of the valve in an emergency. A sealing part is fixedly arranged at the bottom of the main valve body (1), and the outer wall of the screw (12) is rotatably sealed with the sealing part to prevent the fluid from leaking from the gap of the screw (12).

4. The high-pressure micro-flow regulating valve according to claim 2, characterized in that: A common connecting cavity (8) is provided between the main valve body (1) and the auxiliary valve body (2); the bottom end of the connecting cavity (8) is connected to the second cavity (6); the top end of the connecting cavity (8) is connected to the limiting sliding hole (15); one end of the valve core (7) is sealingly slidably arranged in the connecting cavity (8); the outer wall of the connecting rod (9) is sleeved with a spring (10); one end of the spring (10) is fixedly connected to the top inner wall of the connecting cavity (8); the other end of the spring (10) is fixedly connected to the top of the valve core (7); the spring (10) is used to realize the rebound of the valve core (7) when the connecting rod (9) is damaged, thereby completing the closure of the valve.

5. The high-pressure micro-flow regulating valve according to claim 1, characterized in that: The liquid inlet pipe (3) and the liquid outlet pipe (4) are both arranged at an inclination, and the water inlet ends of both are higher than the water outlet ends, so as to mitigate the influence of the high-pressure fluid on the internal components of the valve body.

6. The high-pressure micro-flow regulating valve according to claim 3, characterized in that: The sealing plug (11) is made of metal material and is used to prevent deformation caused by long-term erosion of high-pressure fluid.

7. The high-pressure micro-flow regulating valve according to claim 2, characterized in that: The pitch of the second thread is greater than the pitch of the first thread, and is used to achieve differential movement between the adjustment tube (17) and the connecting rod (9).

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